Home / 135,429.09-186,892.68-74,998.43

Finding the Fourth Proportional to 135,429.09, 186,892.68 and 74,998.43

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Solution

The fourth proportional to 135,429.09, 186,892.68 and 74,998.43 is: 103,498.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,429.09 : 186,892.68 = 74,998.43 : x
  2. Step 2: Convert to fraction form
    135,429.09/186,892.68 = 74,998.43/x
  3. Step 3: Cross multiply
    135,429.09x = 186,892.68 × 74,998.43
  4. Step 4: Simplify right side
    135,429.09x = 14,016,657,578.49
  5. Step 5: Solve for x
    x = 14,016,657,578.49/135,429.09
  6. Step 6: Final answer
    x = 103,498.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.